693 
ZOOLOGICAL LITERATURE. 
ANNELIDA 
BY 
J. Reay Greene, B.A. 
A. Wo7'ks in Prog^'ess. 
Die Borstenwurmer (Annelida chaetopoda) nacli systematisclien 
und anatomisclien Untersuchungen dargestellt. Von Ernst 
Ehlers. Erste Abtheilung. 4to (290 pages and 1 1 plates) . 
Leipzig : Engelmann, 1864. 
The work on the setigerous Annelids by Ehlers, of which the 
first part now lies before us, will henceforth be no less indispen- 
sable to students of this group than the well-known treatise of 
Audouin and Milne-Edwards. Like that monograph, though 
chiefly devoted to the fauna of a limited region, it enters also 
into many particulars touching the higher Annelida in general, 
their structure, habits, and systematic arrangement. After 
a short introduction on the distinctive features of the several 
animal forms referred to the type Vermes of modern naturalists, 
it proceeds to treat in a separate chapter of the characters 
common to the setigerous subclass, under the heads of (1) 
general organization, (2) conditions of life, and (3) classification. 
Then follows a general account of tlie first order, Nei'eidea, here 
divided into eleven families. More detailed notices of seven of 
these occupy the second and principal moiety of the work. 
Twenty-five new species of Nereidea, from Quarnero and its 
neighbourhood, are described with great minuteness, as is like- 
wise the Phyllodoce lamelligera of Johnston, found by Ehlers 
in the same district. Six of these species belong to new genera, 
and one to a new idimi\j-—Chrysopetalea. Five new genera are 
also founded for the reception of species previously known. A 
few obscure or doubtful species not new to science are briefly 
noticed. To the detailed account of each new species afforded 
by the text a more concise definition, in small type, is prefixed. 
Similar definitions, but without descriptions, of the genera to 
which these species severally belong, and of various critical 
species referable to other genera, are given. All the families 
are defined, and, in addition, most of them are reviewed at con- 
siderable length, thei|.* genera enumerated, or even furtlicr 
